Display screen module and display screen

Abstract

The present disclosure provides a front maintenance display screen module, including: a bottom case, a PCB provided on the bottom case, and a through-hole structure penetrating the bottom case and the PCB. The through-hole structure includes a step structure at one end of the through hole structure near the PCB, and the step structure includes a convex portion and a step portion. The convex portion is configured to penetrate the PCB, a gap is provided between the convex portion and the PCB. The step portion includes a groove surrounding the convex portion. A side of the PCB near the bottom case is abutted against an edge of the groove. A sealant layer is provided in the gap and the groove.

What is claimed is: 
     
       1. A display screen module, comprising:
 a bottom case, 
 a PCB provided on the bottom case, and 
 a through-hole structure penetrating through the bottom case and the PCB, wherein:
 the through-hole structure comprises a step structure at one end of the through hole structure near the PCB, and the step structure comprises a convex portion and a step portion; 
 the convex portion is configured to penetrate the PCB, a gap is provided between the convex portion and the PCB; 
 the step portion comprises a groove surrounding the convex portion; 
 
 a side of the PCB near the bottom case is abutted against an edge of the groove; and 
 a sealant layer is provided in the gap and the groove; 
 wherein the convex portion comprises at least one arc structure protruded from an outer side wall of the convex portion; 
 the PCB comprises a through hole; 
 the convex portion is located in the through hole; 
 the through hole comprises a first notch corresponding to the arc structure, the first notch is arc-shaped; and 
 a radius of the first notch is larger than that of the arc structure. 
 
     
     
       2. The display screen module of  claim 1 , wherein the first notch is also provided with a second notch. 
     
     
       3. The display screen module of  claim 1 , wherein a plurality of lamp beads are provided on the PCB, and the first notch is located between two adjacent lamp beads. 
     
     
       4. The display screen module of  claim 1 , wherein an outer diameter of the groove is larger than a diameter of the through hole. 
     
     
       5. The display screen module of  claim 1 , wherein a rounded corner is provided at a joint between the convex portion and the groove. 
     
     
       6. The display screen module of  claim 1 , wherein the through-hole structure is integrally formed with the bottom case. 
     
     
       7. The display screen module of  claim 1 , wherein a side of the PCB away from the bottom case is also provided with the sealant layer. 
     
     
       8. A display screen, comprising a display screen module comprising a bottom case, a PCB provided on the bottom case, and a through-hole structure penetrating through the bottom case and the PCB, wherein:
 the through-hole structure comprises a step structure at one end of the through hole structure near the PCB, and the step structure comprises a convex portion and a step portion; 
 the convex portion is configured to penetrate the PCB, a gap is provided between the convex portion and the PCB; 
 the step portion comprises a groove surrounding the convex portion; 
 a side of the PCB near the bottom case is abutted against an edge of the groove; 
 a sealant layer is provided in the gap and the groove; 
 the convex portion comprises at least one arc structure protruded from an outer side wall of the convex portion; 
 the PCB comprises a through hole; 
 the convex portion is located in the through hole; 
 the through hole comprises a first notch corresponding to the arc structure, the first notch is arc-shaped; and 
 a radius of the first notch is larger than that of the arc structure. 
 
     
     
       9. The display screen of  claim 8 , wherein the first notch is also provided with a second notch. 
     
     
       10. The display screen of  claim 8 , wherein a plurality of lamp beads are provided on the PCB, and the first notch is located between two adjacent lamp beads. 
     
     
       11. The display screen of  claim 8 , wherein an outer diameter of the groove is larger than a diameter of the through hole. 
     
     
       12. The display screen of  claim 8 , wherein a rounded corner is provided at a joint between the convex portion and the groove. 
     
     
       13. The display screen of  claim 8 , wherein the through-hole structure is integrally formed with the bottom case. 
     
     
       14. The display screen of  claim 8 , wherein a side of the PCB away from the bottom case is also provided with the sealant layer.